About: http://webisa.webdatacommons.org/64576743

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	in the dispensing means by providing a blocking means such as an air bubble or a mechanical seal which, during the period between flushes, blocks the ports by which liquid flows into and out of the dispensing means.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com